Anton dvokak



May 24, 1927. A. DVORAK LIGHTING FIXTURE Fild May 26, 1924 Patented. May 24-, 1927.

v UNITED STATE ANTON DVORAK, OF BERWYN, ILLINOIS,

ASSIGNOR TO BEARDSLEE CHANDELTER MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF DELA WARE.

LIGHTING Application filed May 26,

'supporting the bulbs and glassware of lighting fixtures may be readily secured to the supporting portions of the lighting fixtures; whether said fixture is of the chandelier or suspended type, or of the bracket or wall type; that is to say my invention relates to means whereby the glass and lamp-holding portions or arms of the fixture may be quickly assembled in place and properly supported in position.

My invention has for its object the provision of a construction whereby the respective arms or wire holding tubing of a fixture may be readily secured to the supporting portion orstem of the fixture and adjusted so that the entire fixture may be in perfect balance while at the same time providing a construction whereby the lamp and glassware supporting tubes or arms may be readily positioned to conform with the surroundings or location of the fixture.

The objects and advantages of my invention will all be more readily comprehended from the following detailed description of the accompanying drawing which forms a part of my invention and wherein:

Figure l is a partial elevation and sectional view illustrating the application of my invention to a chandelier.

Figure 2 is a detail sectional view taken on the line 22 of Figure lloolzing in the direction of the arrows.

lligure 3 is a detail sectional view taken on the line 3-3 of Figure 1 looking in the dim-nation of the arrows, with the outer shell ouiittm l.

lligure 4 is a perspective view of the arm supporting member.

Figure 5 isa detail perspective view of a portion of a lamp and glass holding tubing or arm of the fixture.

In the particular exemplilication of the invention as illustrated in the drawing, 1 have disclosed. my invention as applied to a lighting fixture of the ceiling or chandelier type. The body of the fixture comprises a suitable rod or tubular member which is usually provided at the upper end with a FIXTURE.

1924. Serial No. 715,844.

ally pass) is usually of length sufiicientto permit an enclosing or surroiuiding shell 18 to be secured thereto as shown in Figure 1, in any suitable manner for the purpose of giving proper finish to the fixture.

The -;1ipportingti1be 10 may be a con tinuous rod extending through the bottom of the shell, or it may consist of an extensible tube with the one portion screwing within the other; or the lower rod connected to the upper tubing by a suitable coupling.

My improved means comprises a plate or disc 14., preferably of sheet metal and of any desired configuration, usually circular as shown in Figures 3 and 4; the plate-or disc being centrally provided with an opening of size sufficient to permit the plate or disc to be readily inserted onto the end of the rod or supporting tubular member 10 to the desired point, where it is shown held in place by nut 16.

The plate 14 is shown provided with a plurality of elongated slots 17 arranged radially from the center of the plate; with the inner ends of the slots enlarged so as to freely receive the threaded ends 18 of the tubular arms 19; while the elongated or major portion of each slot is narrower than the diameter of the threaded end 18 of the tubular arm. i

The tubular arm, which may be circular in cross-section throughout its length or somewhat elliptical in cross-section, is provided with slots 20 20 at diametrically opposite points and adjacent to the threaded end 18; the slots being of length sufficient to per mit the portion of the tube intermediate oi" the slots 20, 20, to pass into the elongatl-id narrow portion of the slot 17; namely so as to permit the threaded end of the tube to move to vard'the outer end of the slot 17, wherethe tube may be locked in place by means of a suitable nut 21 adapted to screw onto the threaded end 18 of the tubular arm and thereby cause the arm to be firmly clamped in place.

From the construction shown, it is apparent that the fixture may be readily assembled; the various tubular arms of the fixture easily adjusted in place so as to properly balance the fixture and compensate for any slight differences in weight that may exist in the arms or in the glassware carried thereby; while at the same time enabling any one or more of the tubular arms to be easily repaired or replaced, or all of the arms removed and replaced by a somewhat differently configurated or bent tubular arm when desired, while permitting the main or body portion of the fixture to remain and be employed in connection with tubular arms of a different style or configuration.

In the exemplification, the tubular arms 19 are shown disposed and curving upwardly from the upper side of the attaching member or plate 14;; but it is clearly apparent that the tubular arms may beinserted from the under side of the plate or member 1% in a fixture en'iploying a di erent type of shell from the shell 13 illustrated, namely a Shell formed to pern'iit the arms to extend 113cm the lower side of the plate and curve upwardly, that is to say in opposite direction to the arms illustrated, with'the. nuts 21 a ranged on the upper side of the plate 14.

It is also apparent that myinvention may be readily applied to a wall or bracket type of fixture; and'that the plate or member 14: may be provided with any desired number of slots 17 in keeping with the style of fixture or number of lamp supporting tubular arms I have shown and described What I be lieve to be the simplest and best embodiment of my invention which has beendescribed in terms employed merely as terms of description and not as terms of limitation as strue tural modifications are possible and may be made without, however, departing from the spirit of my invention.

What I claim is:

1. In a lighting fixture, a main supporting roe, an apertured plate or disc adapted to be secured to said rod, said plate or disc being provided with elongated radially arranged slots, one end of each slot being enlarged, lamp supporting arms, each having an end adapted to pass through the enlarged end of one ot said slots, said arms havingreduced portions adjacent to said ends to permit said end. of the arm to slide into the restricted portion oi the elongated slot.

2. In a lighting :tixture, a main supporting nien'iber, a plate adapted to be f-ecured to the mporting member and provided with slots radiating from a common point, with the inner ends of the slots enlarged, arms each having an end adapted to passthrough the enlarged end of one of said slots, said end of the arm at opposite sides being slotted to permit the end of the arm to slide lengthwise of the reduced portion of the slot in said plate, and means whereby thearms may be locked in place.

ANTON DVORAK. 

